Claude Code v2.1.197: Claude Sonnet 5 Default, 1M Tokens, Promo Pricing

Claude Code v2.1.197 ships with Claude Sonnet 5 as the default model. The new model offers a native 1M-token context window and promotional pricing of $2 per million input tokens and $10 per million output tokens through August 31. Update to version 2.1.197 to get access.
Key Details
- Default Model Change: Claude Sonnet 5 is now the default in Claude Code. No manual model selection required after updating.
- Context Window: Native 1M-token context — same size as Claude 3.5 Sonnet, but now built in without chunking.
- Pricing Promotion: $2/Mtok input, $10/Mtok output until August 31. After the promo, pricing reverts to standard rates (not specified in source).
- Version Requirement: Must be on v2.1.197 to use Claude Sonnet 5 in Claude Code.
No other changes or fixes are documented in this release. The update is available now for all Claude Code users. To upgrade, run the standard update command for your setup.
📖 Read the full source: GitHub Claude-Code
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